/*
 * @Descripttion:
 * @Author: voanit
 * @Date: 2022-05-29 09:50:50
 * @LastEditors: voanit
 * @LastEditTime: 2022-05-29 09:55:22
 */
export {}

function fn(n1: number, n2: number): string {
  return n1 + n2 + ''
}

fn(1, 2)
type f1 = typeof fn
type f2 = ReturnType<f1>
